RFR: 8340547: Starting many threads can delay safepoints [v3]

[Oli Gillespie]

On Tue, 24 Sep 2024 00:47:52 GMT, Dean Long <dlong at openjdk.org> wrote:

> If JVM_StartThread is only called by Thread.start0, then how about putting the new lock in Java instead?

What benefit do you see of that? One downside is that the lock will be coarser than necessary. I'd rather keep the lock as tightly scoped as possible.

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PR Comment: https://git.openjdk.org/jdk/pull/21111#issuecomment-2370752972